lib/rfcnb/rfcnb-priv.h

   1 /* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
   2  *
   3  * Version 1.0
   4  * RFCNB Defines
   5  *
   6  * Copyright (C) Richard Sharpe 1996
   7  *
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 #ifndef _RFCNB_RFCNB_PRIV_H
  27 #define _RFCNB_RFCNB_PRIV_H
  28
  29 /* Defines we need */
  30
  31 typedef unsigned short uint16;
  32
  33 #define GLOBAL extern
  34
  35 #include "rfcnb/byteorder.h"
  36 #include "rfcnb/rfcnb-common.h"
  37 #include "rfcnb/rfcnb-error.h"
  38
  39 #if HAVE_NETINET_IN_H
  40 #include <netinet/in.h>
  41 #endif
  42
  43 #ifdef RFCNB_PORT
  44 #define RFCNB_Default_Port RFCNB_PORT
  45 #else
  46 #define RFCNB_Default_Port 139
  47 #endif
  48
  49 #define RFCNB_MAX_STATS 1
  50
  51 /* Protocol defines we need */
  52
  53 #define RFCNB_SESSION_MESSAGE 0
  54 #define RFCNB_SESSION_REQUEST 0x81
  55 #define RFCNB_SESSION_ACK 0x82
  56 #define RFCNB_SESSION_REJ 0x83
  57 #define RFCNB_SESSION_RETARGET 0x84
  58 #define RFCNB_SESSION_KEEP_ALIVE 0x85
  59
  60 /* Structures      */
  61
  62 typedef struct redirect_addr *redirect_ptr;
  63
  64 struct redirect_addr {
  65
  66     struct in_addr ip_addr;
  67     int port;
  68     redirect_ptr next;
  69
  70 };
  71
  72 typedef struct RFCNB_Con {
  73
  74     int fd;                     /* File descripter for TCP/IP connection */
  75     int errn;                   /* last error                            */
  76     int timeout;                /* How many milli-secs before IO times out */
  77     int redirects;              /* How many times we were redirected     */
  78     struct redirect_addr *redirect_list;        /* First is first address */
  79     struct redirect_addr *last_addr;
  80
  81 } RFCNB_Con;
  82
  83 typedef char RFCNB_Hdr[4];      /* The header is 4 bytes long with  */
  84 /* char[0] as the type, char[1] the */
  85 /* flags, and char[2..3] the length */
  86
  87 /* Macros to extract things from the header. These are for portability
  88  * between architecture types where we are worried about byte order     */
  89
  90 #define RFCNB_Pkt_Hdr_Len        4
  91 #define RFCNB_Pkt_Sess_Len       72
  92 #define RFCNB_Pkt_Retarg_Len     10
  93 #define RFCNB_Pkt_Nack_Len       5
  94 #define RFCNB_Pkt_Type_Offset    0
  95 #define RFCNB_Pkt_Flags_Offset   1
  96 #define RFCNB_Pkt_Len_Offset     2      /* Length is 2 bytes plus a flag bit */
  97 #define RFCNB_Pkt_N1Len_Offset   4
  98 #define RFCNB_Pkt_Called_Offset  5
  99 #define RFCNB_Pkt_N2Len_Offset   38
 100 #define RFCNB_Pkt_Calling_Offset 39
 101 #define RFCNB_Pkt_Error_Offset   4
 102 #define RFCNB_Pkt_IP_Offset      4
 103 #define RFCNB_Pkt_Port_Offset    8
 104
 105 /* The next macro isolates the length of a packet, including the bit in the
 106  * flags                                                                   */
 107
 108 #define RFCNB_Pkt_Len(p)  (PVAL((p), 3) | (PVAL((p), 2) << 8) |     \
 109                           ((PVAL((p), RFCNB_Pkt_Flags_Offset) & 0x01) << 16))
 110
 111 #define RFCNB_Put_Pkt_Len(p, v) ((p)[1] = (((v) >> 16) & 1)); \
 112                                 ((p)[2] = (((v) >> 8) & 0xFF)); \
 113                                 ((p)[3] = ((v) & 0xFF));
 114
 115 #define RFCNB_Pkt_Type(p) (CVAL((p), RFCNB_Pkt_Type_Offset))
 116
 117 #if UNUSED_CODE
 118 typedef struct RFCNB_Hdr {
 119     unsigned char type;
 120     unsigned char flags;
 121     int16 len;
 122 } RFCNB_Hdr;
 123
 124 typedef struct RFCNB_Sess_Pkt {
 125     unsigned char type;
 126     unsigned char flags;
 127     int16 length;
 128     unsigned char n1_len;
 129     char called_name[33];
 130     unsigned char n2_len;
 131     char calling_name[33];
 132 } RFCNB_Sess_Pkt;
 133
 134 typedef struct RFCNB_Nack_Pkt {
 135     struct RFCNB_Hdr hdr;
 136     unsigned char error;
 137 } RFCNB_Nack_Pkt;
 138
 139 typedef struct RFCNB_Retarget_Pkt {
 140     struct RFCNB_Hdr hdr;
 141     int dest_ip;
 142     unsigned char port;
 143 } RFCNB_Redir_Pkt;
 144 #endif /* UNUSED_CODE */
 145
 146 /* Static variables */
 147
 148 /* Only declare this if not defined */
 149
 150 #ifndef RFCNB_ERRNO
 151 extern int RFCNB_errno;
 152 extern int RFCNB_saved_errno;   /* Save this from point of error */
 153 #endif
 154
 155 #endif /* _RFCNB_RFCNB_PRIV_H */